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# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
# Copyright 2014-2020 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
#
# This file is part of qutebrowser.
#
# qutebrowser is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# qutebrowser is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with qutebrowser. If not, see <http://www.gnu.org/licenses/>.
"""Base text widgets for statusbar."""
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QLabel, QSizePolicy
from PyQt5.QtGui import QPainter
from qutebrowser.utils import qtutils, utils
class TextBase(QLabel):
"""A text in the statusbar.
Unlike QLabel, the text will get elided.
Eliding is loosely based on
http://gedgedev.blogspot.ch/2010/12/elided-labels-in-qt.html
Attributes:
_elidemode: Where to elide the text.
_elided_text: The current elided text.
"""
def __init__(self, parent=None, elidemode=Qt.ElideRight):
super().__init__(parent)
self.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Minimum)
self._elidemode = elidemode
self._elided_text = ''
def __repr__(self):
return utils.get_repr(self, text=self.text())
def _update_elided_text(self, width):
"""Update the elided text when necessary.
Args:
width: The maximal width the text should take.
"""
if self.text():
self._elided_text = self.fontMetrics().elidedText(
self.text(), self._elidemode, width, Qt.TextShowMnemonic)
else:
self._elided_text = ''
def setText(self, txt):
"""Extend QLabel::setText to update the elided text afterwards.
Args:
txt: The text to set (string).
"""
super().setText(txt)
if self._elidemode != Qt.ElideNone:
self._update_elided_text(self.geometry().width())
def resizeEvent(self, e):
"""Extend QLabel::resizeEvent to update the elided text afterwards."""
super().resizeEvent(e)
size = e.size()
qtutils.ensure_valid(size)
self._update_elided_text(size.width())
def paintEvent(self, e):
"""Override QLabel::paintEvent to draw elided text."""
if self._elidemode == Qt.ElideNone:
super().paintEvent(e)
else:
e.accept()
painter = QPainter(self)
geom = self.geometry()
qtutils.ensure_valid(geom)
painter.drawText(0, 0, geom.width(), geom.height(),
int(self.alignment()), self._elided_text)
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